However, it is difficult to draw a general conclusion and the possible "gothic" link would be limited to certain subclades.
According to FTDNA's big tree,
R-Y2902's "mother" clade is mainly present in:
- Russia (29,12 % of R-CTS8816 carriers); and
- Poland (25,59 % of R-CTS8816 carriers).
While only a minority originates from Western Europe, i.e.:
- Germany (6.47 % of R-CTS8816 carriers);
- Italy (2,06 % of R-CTS8816 carriers);
- France (1,47 % of R-CTS8816 carriers);
- Spain (0,29 % of R-CTS8816 carriers).
And the carriers' number does not exceed 1,2 % in the Balkans.
This limited western/southern distribution is also confirmed by Yfull (
https://www.yfull.com/tree/R-Y2902/) where you will see various exclusively Russian and Polish subclades (which of course does not take into account a possible German ancestry of the tested persons) but also certain atypical subclades such as the exclusively Sardinian
R-Y1396 (which could have been brought by East Germanic invaders) and the basal Albanian
R-Y3226* (which is for the moment only present in Albania).